Looks like everyone agrees that Treasure Planet is a dead giveaway. With that being said I've got a gut feeling that the Land of Departure will return as an explorable world. I would like to say the same for Castle Oblivion but I fear that world will be reduced to naught but cutscenes.

I never thought of it that way, this very well may have been our tutorial segment. Which brings up he question of what it's going to be this time around? Given that we already know the game will start with Xehanort and Eraqus it'd be easy to guess that the new tutorial might feature one of them(Perhaps even via a training duel?). On the other hand we might get a tutorial in the form of Kairi's training. Or Nomura might take the cop out option and go with Sora. Man I'm really getting hyped!